traps: x86: remove trace_hardirqs_fixup from pagefault handler
The last use of trace_hardirqs_fixup is unnecessary, because the
trap is taken with interrupt off on i386 as well as x86_64, and
the irq-tracer is notified of this from the assembly code.
trace_hardirqs_fixup and trace_hardirqs_fixup_flags are removed
from include/asm-x86/irqflags.h as they are no longer used.
Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index a742d75..3f2b896 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -592,11 +592,6 @@
unsigned long flags;
#endif
- /*
- * We can fault from pretty much anywhere, with unknown IRQ state.
- */
- trace_hardirqs_fixup();
-
tsk = current;
mm = tsk->mm;
prefetchw(&mm->mmap_sem);
diff --git a/include/asm-x86/irqflags.h b/include/asm-x86/irqflags.h
index 424acb4..2bdab21 100644
--- a/include/asm-x86/irqflags.h
+++ b/include/asm-x86/irqflags.h
@@ -166,27 +166,6 @@
return raw_irqs_disabled_flags(flags);
}
-/*
- * makes the traced hardirq state match with the machine state
- *
- * should be a rarely used function, only in places where its
- * otherwise impossible to know the irq state, like in traps.
- */
-static inline void trace_hardirqs_fixup_flags(unsigned long flags)
-{
- if (raw_irqs_disabled_flags(flags))
- trace_hardirqs_off();
- else
- trace_hardirqs_on();
-}
-
-static inline void trace_hardirqs_fixup(void)
-{
- unsigned long flags = __raw_local_save_flags();
-
- trace_hardirqs_fixup_flags(flags);
-}
-
#else
#ifdef CONFIG_X86_64